Why would you ever want more than 2000fpm on a go around ?
This is one of many well thought out features on the 757 / 767
One of the biggest challenges on go arounds (which we rarely do) is an excessive rate of climb approaching a low altitude level off mandated on the missed approach and / or by ATC
Rarely do you ever need more than that, a positive but smooth thrust increase to 2000fpm and with far less pitch coupling is good strategic planning far less likely to result in an altitude overshoot
I remember selecting go around in the MD 80 at on a few occasions, with its crude autothrottles it was such a massive thrust increase and pitch change it was all you could do to stay ahead of the aircraft and level off when required
If you need more power it’s there, otherwise I think it’s a fine system